Cdgm Glass Co., Ltd

Baoping Yuan

Tianlai Yu

Zhenyu Liu

Xiaobing Nie

Xuemei Chen

Sai Li

Tao Jiang

Xuejian Su

Yong Su

The present invention discloses a microcrystalline glass, a microcrystalline glass product, and a manufacturing method therefor. The main crystal phase of the microcrystalline glass comprises lithium silicate and a quartz crystal phase. The haze of the microcrystalline glass of the thickness of 0.55 mm is below 0.6%. The microcrystalline glass comprises the following components in percentage by weight: SiO: 65-85%; AlO: 1-15%; LiO: 5-15%; ZrO: 0.1-10%; PO: 0.1-10%; KO: 0-10%; MgO: 0-10%; ZnO: 0-10%. A four-point bending strength of the microcrystalline glass product is more than 600 Mpa.

Microcrystalline glass, microcrystalline glass product, and manufacturing method therefor

A glass ceramic contains the following components by wt %: 60 to 80% of SiO; 4 to 20% of AlO; 0 to 15% of LiO; more than 0 but less than or equal to 12% of NaO; 0 to 5% of KO; more than 0 but less than or equal to 5% of ZrO; 0 to 5% of PO; and 0 to 10% of TiO. A crystalline phase contains at least one of RSiO, RSiO, RTiO, RTiO, RPO, RAlSiO, RAlSiOO, RAlSiO, RAlSiO, quartz and quartz solid solution. With a liquidus temperature below 1,450&#xb0; C., a thermal conductivity above 2 w/m&#xb7;k, and a Vickers hardness above 600 kgf/mm2, the glass ceramic is applicable to portable electronic devices and optical devices.

Glass-ceramic and substrate thereof

The present invention provides a microcrystalline glass product. The microcrystalline glass product includes the following components in percentage by weight: SiO: 45-70%; AlO: 8-18%; LiO: 10-25%; ZrO: 5-15%; PO: 2-10%; and YO: greater than 0 but less than or equal to 8%. Through reasonable component design, the microcrystalline glass and the microcrystalline glass product obtained in the present invention have excellent mechanical and optical properties and are suitable for electronic devices or display devices.

Microcrystalline glass, microcrystalline glass product and manufacturing method thereof

The present invention discloses a glass-ceramic article and a glass-ceramic for an electric device cover plate, the glass-ceramic comprises, as a predominant crystalline phase, lithium silicate and the quartz crystalline phase, and has a composition expressed in weight percent including: SiO: 65-85%, AlO: 1-15%, LiO: 5-15%, ZrO: 0.1-10%, PO: 0.1-10%, KO: 0-10%, MgO: 0-10%, ZnO: 0-10%, and NaO: 0-5%, wherein (SiO+AlO+LiO+ZrO)/POis 40-90, the falling ball test height is 700 mm or more. By reasonable component design, the present invention achieves excellent mechanical properties of the glass-ceramic and the glass-ceramic article of the present invention and obtains the glass-ceramic or the glass-ceramic article suitable for electronic devices at a lower cost.

Glass-ceramic article and glass-ceramic for electronic device cover plate

A high-hardness transparent glass ceramic and a preparation method therefor, wherein the components by weight percentage include: 55.0%-70.0% of SiO, 15.0%-20.0% of AlO, 0%-10.0% of MgO, and 0%-12.5% of ZnO, necessarily including one of MgO or ZnO, and the crystallized glass thereof contains microcrystals of spinel crystal. In the present invention, a suitable precursor glass is subjected to thermal treatment, and microcrystals are separated from the glass substrate by crystallization, producing a glass ceramic having a Moh's hardness greater than 7 and a visible-light transparency rate greater than 80% through 1 mm of the glass. The glass ceramic of the invention overcomes the problem that ordinary optical glass is easy to be scratched. The present glass ceramic can be served as protective face for mobile phones, protective glass for optical instruments and in communications equipment, substrate for magnetic disks, LCD panel, or protective glass for other optoelectronic devices.

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Chengdu, China

Baoping Yuan